Process of making brake-shoes.



J. D. RISTNE@ B. C. HOWELL n. H. avm, Amfumsmmn DE soms N011 or 8.1:.11011511.. osc'n.

PROCESS 0F MAKING BRAKE SHOES. `APPLICATIQN FILED FEB'. 14, 1912. RENEWED 111115 1. 1s'11.`

5?21 Patented Feb. 19, w18.

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JOHN D. RISTINE AND BENTON C. ROVJELL, OF CHICAGO, ILLINOIS; NORTON H. BYAIVI, ADMINISTRATOR DE BONIS NON OF SAID BENTON C. ROWELL, DEOEASED, AND SAID JOI-IN D. RISTINE, ASSIGNORS TO ANCI-IOR BRAKE (Sr MANUFACTURING COM- IANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PROCESS OF MAKING BRAKE-SHOES.

Specification of Letters Patent.

Application led February 14, 1912, Serial No. 677,496. Renewed .Tune 1, 1917. Serial No. 172,282. p

To all whom it may concern:

Be it known that we, JOHN D. Rrs'rrNn and BENTON C. BowELL, citizens of the United States, and residents of Chicago, in the State of Illinois, have invented certain new and useful Improvements in Processes of Making Brake-Shoes, of which the following is a specification.

Our present invention relates to processes of casting brake shoes and more particularly brake shoes containing strengthening inserts, and has special reference, first, to the provision of an improved process for the manufacture of shoes of the character referred to whereby one or more strengtheninginserts are most firmly anchored in the body of the shoe, and, second, wherein such strengthening inserts are not only anchored in the body but may also be anchored to to other reinforcements or inserts or vice versa.

rlhe principal objects of our present invention are the provision of an improved and simplified process for the manufacture of brake shoes, by the employment of which the reinforcement of the attaching lug of the shoe and of the body of the shoe respectively may be firmly anchored together, and anchored in the body of the shoe, whereby such reinforcements and one or more wearing inserts disposed in the body of the shoe may be anchored together and in such body, and whereby the molding andcasting of brake shoes may be materially simplified.

By the employment of our improved process we are enabled to produce, first: structures, adapted in the event of breakage, to restrain any portion of either the insert or the body from falling upon the track; and, second: an improved reinforcement and anchorage of the attaching lug, thereby preventing the shoe from becoming disengaged from the brake head and falling upon the track in the event of fracture of the cast metal portions of such attaching lug, or the insert from falling upon the track should it in any wise become disengaged from the body portion of the shoe; and gain certain further features of benefit and advantage in the construction of brake shoes which. are also disclosed and claimed in our cci-pending application Serial No. 664,625, led December 8, 1911.

In carrying out our improved process and attaining the results referred to we preferably employ certain apparatus and elements illustrated in the accompanying drawing, whereiniigure 1 is a longitudinal vertical sectional view illustrative of a mold employed in'casting one form of insert used by us;

Fig. 2 is a longitudinal vertical sectional view illustrative of a mold employed in casting a complete brake shoe;

Fig. 3 is a longitudinal elevational View, partly in vertical section, illustrative of a brake shoe produced by our improved process;

Fig. l is an assembled plan view of the strengthening inserts employed in the reinforcement of the body of the shoe and the attaching lug therefor;

Fig. 5 is a sectional view taken on the line V-V ,of Fig. l; and

Fig. 6 is a perspective view of the lug reinforcement.

In producing a wear resisting insert 10 (Fie. 5) we may employ a mold 11, (Fig. 1) and for producing either plain reinforced shoes or those containing wear resisting inserts 10, we may employ a mold such as indicated at 12 (Fig. 2). It will thus be apparent that by the employment of the mold 11, when we desire to produce shoes containing a wearing insert, we are enabled rapidly to produce, all connected together as a unitary insert `ready for emplacement into the mold 12 preparatory for the casting of the body of the shoe, the reinforcement for the back, the lug, and the wearing insert.

As will be seen on viewing Fig. 3, wehave here illustrated the result of the employment of our process in connection with the production of the Master Car Builders standard railway car shoe, the shoe body portion 13 being preferably made of relatively soft metal such as gray cast iron, the member 14 serving not only as a back to reinforce and strengthen the body of the shoe, but also to anchor the inserts 10 and the reinforcement strap 15 for the lug 15a in place in the shoe body, said strap 15 being preferably made of steel or other tenacious ductile metal, and, when used the inserts 10, Figs. 2 yand 5, be-

ing relatively hard metal such as white cast iron.

Referring now more particularly to Figs. 4, 5 and 6, it will be observed that preparatory' to castingY the wear resistingfinsert 10 in the mold 11 (Fig. l) or the shoe embracing such insert, or. a plain reinforced shoe, by the use of said mold 12v (Fig. 2) we preferably employ for the insert 14 a piece of material of such a degree of pliancy or leXi-'` bility as will permit its being bent so as tov present oppositely disposed sides 14, 142v and preferably having a certain degree of elasticity or resiliency to the end that it mayy hold vthe lug reinforcement 15 between the portions 14 and 142. In order to pre-` vent any displacement of the lug 15 relatively, to the strengtheningr insert 14 we preferably employ a member of channel shape in cross section and form the legs 16 of the lug reinforcement 15 with -oifsetfportions 17 4`adapted to make close contact with' the oppositely disposed portions 14l and 142 of thev member 14 as is clearly to be seen in Fig. 5. l

To'the endV that when the legs 16 of the lug reinforcement 15 are first compressed and then inserted between the channel por- -tions 14, 142, and by the close contact shown g the lug reinforcement 15 is prevented Vfrom disengagement withthe member 14, the piece of material from which the member 14 is formed should be so.4 bent that the flanges 18 18.2 face each other andwhile the portions 14 and 142 of such member 14 need i not .be'integrah Vwe find4 thisY construction the most expedient since it is the least eX- Y pensive manner of, forming the reinforce ment, andmost desirable for preventing any '142-of thefbody reinforcing member 14 and positioned inthe mold 11 as 'shownin Fig. 1 the reinforcements 10 may then be poured,

.locking the parts l4and 1 5 in therelative position shownrin Fig.' 4: andv securing the wearing inserts 10-10 and the parts 14and 15 Ytogether asl indicated in Fig. 5, and

thereby anchoring them v againstl relative movement,y without the employment during the pouring of the Vshoe of any supporting pins' brother extraneous supporting member whatsoever. Y y y The structure thus produced by the uselofV themold 11 may thenbe placed in the mold 12 rv(Figlf2) and the body 13 cast'thereabout locking themembers 10, 13, 14 and' 15- against any Vrelative movement whatsoever'and preventing anyl falling'away offany portion of `metal of said body. Y

tially `beoldfe'd in said i thereto.

the body'18` should the shoe be broken transversely, or dropping of the shoe as a whole should the cast lugx become.broken'inV service.

Having thus described oui-invention and illustratedits use, whatwe claim fis-' new and desire to secure by Letters Patent is the following: y y f' 1. The processv of making brake shoes whichv consists in forming a strengthening insert having a plurality of substantially parallel resilientlyv connected portions,

Y bringing an attaching lug. into engagement with said portions, and pouringra cast: element about said insert, whereby said4 insert is embedded in said cast element and said lugv is restrained Q. The process ofA nia-king Ybrake shoes which consists in forming a strengthening insert having substantially parallel. resiliently connected portions, emplacing an attaching lug between said sides and pouring a-body about said insert, whereby said insert Y is .embedded in said body'and said lug is attached thereto.

3. The vprocess of making brake shoes which consists in forming a strengthening insert'having. substantially parallel resiliently connected portions, Yemplacing` an attaching-lug between said sidesand pouring a body about said insert and lug, whereby fromV movement relatively: vthereto. Y Y n I saidV insert is embedded in said body, said `i .lug is attached to saidbody and saidV lug is vstrengthened by an extension of the cast y4...l`he process of making brake shoes which consists in forming a strengthening i insertfhaving substantially parallel sides with inwardly directed flanges Velastically Y connected at their ends, emplacing anattach` ing lug-.between said sides and pouring a body about sai'dins'ert, whereby said insert kis embedded in said bodyand said lug` at-VV tached thereto' fianged insert having substantially parallel VYsides elastically connected at their ends, em- Vplacing an attachinglug between said'sides,

and pouringfa body about saidinsert and Vlug, whereby said insert is embedded in said body, said lug isattached to said body, and said lug is strengthened by extension of cast metal of said body. y p

6. The process of Vmaking brake shoes .which consists in providing an inwardly flangedlstrengthening insert having substan- `V parallel sides, providing wearing blocks on said insert, emplacing anY attachin lu "between said lianffed oortions and casting. a body about said wearingA blocks and ianged portions, whereby they areV embody andY said lug is attached. Y' i Y -Y Y ,isoAV Y .p v 110 5. Thefprocess of making brake shoes vwhicliconsists 1n providing an .inwardly f 7. The process of making vbrake shoes which consists in providing an inwardly flanged strengthening insert having substantially parallel sides, providing wearing blocks on said insert, emplacing an attaching lug between said flanged portions and casting a body about said insert, blocks and lug, whereby said insert and blocks are embedded in said body and said lug is strengthened by extensions from the cast metal of said body.

8. The process of making brake shoes which consists in forming a strengtheninginsert having a plurality of substantially parallel flexibly connected portions, bringing an attaching lug into engagement with said portions, and pouring a cast element about said insert, whereby said insert is ernbedded in said cast element and said lug is restrained from movement relatively thereto.

9. The process of making brake shoes which consists in forming a s'rengthening insert having substantially parallel flexibly connected portions, emplacing an attaching lug between said sides and pouring a body about said insert, whereby said insert is ernbedded in said body and said lug is attached thereto.

10. The process of making brake shoes which consists in forming a strengthening insert having` substantially' parallel flexibly connected portions, emplacing an attaching lug between said sides and pouring a body about said insert and lug, whereby said insert is embedded in said body, said lug is attra ched to said body and said lug is strengthcned by an extension of the cast metal of said body.

l1. The process of makingrbrake shoes which consists in forming a strengthening insert, then casting a wearing insert in engageinenttherewith, and inally casting a body in engagement with said strengthening insert and around said wearing insert except for the wearing face thereof, whereby a part of the surface of said body and a part or' the surface of said wearing insert are presented inalternation.

12. The process of making brake shoes which consists in forming a strengthening insert, emplacing an attaching lug thereupon, then casting a wearing insert in connection with said strengthening insert and finally casting a body about said lug and strengthening and wearing inserts, whereby said lug and several inserts have cast engagement with said body and said lug is strengthened by the cast metal of said body.

13. The process of making brake shoes which consists in forming a strengthening insert, emplacing an attaching lug thereupon, then casting a wearing insert in connection with said strengthening insert and linally casting a body about said lug and strengthening and wearing inserts, whereby said lug and several inserts have cast engagement with said body and said lug is engaged by the cast metal of said body.

In testimony whereof we have hereunto signed our naines in the presence of the two subscribed witnesses.

J OHN D. RSTINE. BENTON C. RGWELL.

Witnesses MARTHA WESTMAN, PAUL CARPENTER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

